30201111221 has 4 divisors (see below), whose sum is σ = 30201760992. Its totient is φ = 30200461452.

The previous prime is 30201111217. The next prime is 30201111251. The reversal of 30201111221 is 12211110203.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30201111221 - 2² = 30201111217 is a prime.

It is a super-2 number, since 2×30201111221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30201111196 and 30201111205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30201111251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249305 + ... + 350078.

It is an arithmetic number, because the mean of its divisors is an integer number (7550440248).

Almost surely, 2^30201111221 is an apocalyptic number.

It is an amenable number.

30201111221 is a deficient number, since it is larger than the sum of its proper divisors (649771).

30201111221 is an equidigital number, since it uses as much as digits as its factorization.

30201111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649770.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 30201111221 its reverse (12211110203), we get a palindrome (42412221424).

The spelling of 30201111221 in words is "thirty billion, two hundred one million, one hundred eleven thousand, two hundred twenty-one".